* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    overflow: hidden;
    background: #000;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
}

#fireworks {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

#hint {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: #fff;
    font-size: 18px;
    padding: 12px 24px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 25px;
    backdrop-filter: blur(10px);
    z-index: 100;
    animation: fadeOut 3s ease-in-out forwards;
}

@keyframes fadeOut {
    0% { opacity: 1; }
    70% { opacity: 1; }
    100% { opacity: 0; }
}
